### What needs to get done Currently we show little information when the installation of overlay-packages fails, it just says "failed to install requested packages". ### Why it needs to get done In [this specific case](https://chat.charmhub.io/charmhub/pl/f9a1e6e9ebr1b8ef9bnwqatg4y), the lack of priority on the ppa made a package uninstallable due to the dependencies, but I had to mount/chroot into the base and run the command myself to see the message.